Incorrect Input. Please change your parameters or increase the time horizon required for running this function. The output start index for this execution was zero with a total number of output elements of zero. The Bollinger Bands is very popular indicator that was developed by John Bollinger. It consist of three lines. VelocityShares 3x middle band is a simple moving average of its typical price. The upper and lower bands are (N) standard deviations above and below the middle band. The bands widen and narrow when the volatility of the price is higher or lower, respectively. The upper and lower bands can also be interpreted as price targets for VelocityShares 3x Long. When the price bounces off of the lower band and crosses the middle band, then the upper band becomes the price target. View also all equity analysis or get more info about bollinger bands overlap studies indicator.